55149472 has 24 divisors (see below), whose sum is σ = 124086816. Its totient is φ = 23635392.

The previous prime is 55149449. The next prime is 55149491. The reversal of 55149472 is 27494155.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122878 + ... + 123325.

It is an arithmetic number, because the mean of its divisors is an integer number (5170284).

Almost surely, 2^55149472 is an apocalyptic number.

It is an amenable number.

55149472 is an abundant number, since it is smaller than the sum of its proper divisors (68937344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55149472 is a wasteful number, since it uses less digits than its factorization.

55149472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246220 (or 246212 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 55149472 is about 7426.2690497988. The cubic root of 55149472 is about 380.6394404678.

The spelling of 55149472 in words is "fifty-five million, one hundred forty-nine thousand, four hundred seventy-two".